Here are some Useful validation Commands to check if the OS6900 is indeed acting as an NPIV Gateway :

DC-EDGE-103-> show fcoe fcf
FCF-MAC VLAN Config Sessions A-bit MaxFrmVer Priority
——————–+——-+———–+———+——–+———+———-
E8:E7:32:36:1E:F6 252 Npiv 4 1 no 0 >>>> Note that the Switch has started to act as a FC Forwarder and sends Advertisements on the FCOE VLAN.

DC-EDGE-103-> show module status
Operational
Chassis/Slot Status Admin-Status MAC
————–+————-+————+——————
1/CMM-A UP POWER ON e8:e7:32:36:1e:f5
1/SLOT-1 UP POWER ON e8:e7:32:36:1e:fc
1/SLOT-2 UP POWER ON e8:e7:32:94:68:14